Experimental study on the filtration efficiency of structured packing air handling processors

摘要

Air handling processors with structure packing are widely utilized in the air-conditioning system, in which coupled heat and mass transfer occurs between air and water/desiccant. As an additional benefit, the processor could remove particles at the same time. An experimental setup for a cross-flow packed processor was established to investigate the filtration efficiency, in which air-water and air-desiccant were chosen as flow media. Effects of air and water/desiccant parameters on the filtration performance were experimentally analyzed. The results show that for typical air-to-liquid flow rate ratio (≈ 1), PM5 arrestance efficiency of packed processor with water is 40%~50% while that with LiBr solution is 20%~30%. The filtration efficiency with LiBr solution is higher than that with water when splash effect of liquid is omitted.